Why Robert Pattinson has nothing to say about Kristen Stewart affair… yet

'He's still in shock': Devastated Robert Pattinson heartache over Kristen Stewart's admission of guiltHe's 'devastated' by tryst with British director Rupert Sanders has two young children with model Liberty Ross Relationship hangs in the balance after her grovelling apology

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UPDATED:

08:58 GMT, 26 July 2012

While Kristen Stewart and her married director paramour Rupert Sanders have both issued grovelling apologies for their exposed affair, Robert Pattinson has remained resolutely silent.

Even the cuckolded wife, British model Liberty Ross, has taken a few swipes via cryptic Twitter postings, but sources close to Robert, 26, say the actor is too devastated to yet formulate a response.

Paradise lost: Kristen Stewart, 22, cheated on Robert Pattinson with married director Rupert Sanders, 41 – but you would never have guessed from her demeanour on Sunday at the Teen Choice Awards

Married man: Rupert can be seen with his wedding ring at a Snow White screening in Los Angeles in May

In fact, they say that the Twilight star is still in 'shock' after learning about his partner's transgression.

'Rob is in shock that Kristen cheated on him, he is absolutely devastated,' a source close to the actor told RadarOnline.com.

'But right now he doesn’t want to say anything in public until he figures out what he’s going to do.'

'Rob is really hurt by Kristen,' the source added. 'Catching her cheating is not at all what he expected from her.'

Taking direction: Kristen and Rupert seen chatting in between takes on the set of Snow White And The Huntsman

The actor made his feelings regarding infidelity clear in April, telling Vanity Fair: 'There's a thing I've never got: That is, why do people cheat'

He explained that while he 'can understand the impulse' to cheat, he doesn't comprehend 'how you can keep two relationships going at the same time for long.'

'I'm not the casual-affair kind of guy,' he said. 'If I choose to be with someone, it's because I really want it. When I have a relationship, I'm 100 percent into it.'

Before the drama: Liberty was seen posing up with Kristen, as well as Charlize Theron and Lily Cole, at the London premiere of the movie last month

Kristen said in her apology statement: 'I love [Rob], I’m so sorry.'

She certainly looked to be in love with the hearthrob when she appeared with him at the Comic Con convention in San Diego the weekend before, but it remains to see if Rob will find her sincere.

Meanwhile, the young heartthrobs new movie The Rover has been given the green light by Screen Australia, according to The Hollywood Reporter!

Set in the Australian desert, The Rover is a futuristic western that 'tells the story of Eric (Guy Pearce), who has left everything, everyone and every semblance of human kindness behind him, as he’s forced to join an injured gang member, Rey (Pattinson), to hunt down Rey’s gang after they steal the last of Eric’s possessions.'